CN218147772U

CN218147772U - Bridge expansion joint device

Info

Publication number: CN218147772U
Application number: CN202221605187.4U
Authority: CN
Inventors: 徐速; 徐斌; 尤其; 喻飞; 尹亮亮
Original assignee: Ningbo Lubao Transportation Facilities Co ltd
Current assignee: Ningbo Lubao Transportation Facilities Co ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-12-27
Anticipated expiration: 2032-06-22

Abstract

The utility model relates to a bridge expansion joint device, in this bridge expansion joint device, the steel construction extends along the width direction of bridge, including two interval arrangement's boundary beam steel and locate the well roof beam steel between two boundary beam steels, each displacement case supports the below that corresponds the boundary beam steel separately and can be close to or keep away from well roof beam steel along with boundary beam steel synchronous motion, the crossbeam extends along the length direction of bridge, it just connects on well roof beam steel to arrange the below of roof beam steel structure, through connecting the flexible telescopic structure on the crossbeam and arrange on the removal route of displacement case, when making displacement case and crossbeam take place relative movement because of the displacement of boundary beam steel with well roof beam steel, the flexible telescopic structure can provide good support, thereby interval between well roof beam steel and the boundary beam steel plays linear regulatory action, simultaneously because the flexible telescopic structure has two kinds of elastic support piece and elastic support piece cladding elastic element simultaneously, elastic rigidity is big, the control range is wide, and is very practical.

Description

Bridge expansion joint device

Technical Field

The utility model relates to a bridge member field specifically belongs to a bridge expansion joint device.

Background

The bridge is an open permanent structure spanning over obstacles such as rivers, deep valleys and built roads, the beam end of the bridge can generate creep deformation due to the action of factors such as temperature change, concrete shrinkage and creep deformation, variable load and the like, and in order to adapt to the characteristics of the bridge structure, expansion joints capable of freely deforming are required to be arranged in the bridge structure and between the beam end and a bridge abutment back wall so as to ensure that the bridge deck is smooth and protect the structure.

The profile steel expansion joint device is a form of a highway bridge expansion joint device, and is usually internally provided with an elastic adjusting mechanism which is used for adjusting the distance between each middle beam steel and each side beam steel in the expansion joint device. For example, CN201720926069.6 discloses a "bridge expansion joint device for a bridge", in which a first supporting box and a second supporting box are provided at the left and right ends of a pressing support, a displacement control buffer is provided in the first supporting box, and the displacement control buffer is electrically connected to a supporting beam. Most of the existing displacement control buffers are made of single polyurethane materials, the rigidity of the buffers is low, and the buffers are easy to damage in the perennial use process.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a bridge expansion joint device that displacement distribution is even between big, each well roof beam steel of elastic construction elasticity and the boundary beam steel.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a bridge expansion joint installation comprising:

the beam steel structure extends along the width direction of the bridge and comprises two edge beam steels arranged at intervals and a middle beam steel arranged between the two edge beam steels;

the displacement box assembly comprises two displacement boxes which are oppositely arranged, and each displacement box is supported below the corresponding side beam steel and can move synchronously with the side beam steel to be close to or far away from the middle beam steel;

the beam extends along the length direction of the bridge, is arranged below the beam steel structure and is connected to the middle beam steel, and two end parts of the beam extend into the corresponding displacement boxes and can move relative to the displacement boxes in the movement of each displacement box;

and the two groups of elastic telescopic structures are respectively connected to the two end parts of the cross beam and are arranged on the moving path of the corresponding displacement box, and each elastic telescopic structure comprises an elastic supporting part and an elastic coating part, wherein the elastic coating part is wrapped on the periphery of the elastic supporting part, and the elastic coating part can elastically contract in the length direction of the bridge synchronously with the elastic supporting part under the action of the corresponding displacement box.

In order to facilitate the connection of the elastic telescopic structures, it is preferable that the cross beam has a pressure plate located in the displacement box and extending laterally, and each elastic telescopic structure is arranged between the pressure plate and the inner wall of the displacement box.

Specifically, each displacement box is provided with a reinforcing plate on the side wall adjacent to the middle beam steel, the pressure plate is arranged on the end part, far away from the middle beam steel, of the cross beam, and the elastic telescopic structure is arranged between the pressure plate and the reinforcing plate.

In order to ensure the strength of the elastic telescopic structure, preferably, the elastic telescopic structure further comprises an intermediate shaft, the intermediate shaft and the cross beam extend in the same direction, the elastic supporting part is sleeved on the intermediate shaft, and the elastic cladding part wraps the peripheries of the intermediate shaft and the elastic supporting part and can elastically stretch and retract along the length direction of the intermediate shaft synchronously with the elastic supporting part.

Specifically, the elastic coating piece is strip-shaped, and two side edges of the elastic coating piece in the length direction are in arc transition.

Preferably, two ends of the intermediate shaft are respectively exposed out of two end faces of the elastic cladding member, and the pressing plate and the reinforcing plate are provided with positioning holes for the two ends of the intermediate shaft to penetrate through.

Two groups of elastic telescopic structures on the cross beam are arranged in a staggered mode in the width direction of the bridge.

Compared with the prior art, the utility model has the advantages of: in this flexible seam device of bridge, through connecting elastic telescopic structure on the crossbeam and arrange on the removal route of displacement case, when making displacement case and crossbeam because the displacement of boundary beam steel and well roof beam steel and take place relative movement, elastic telescopic structure can provide good support to interval between centering beam steel and the boundary beam steel plays linear regulatory action, simultaneously because elastic telescopic structure has two kinds of elastic element of elastic support piece and elasticity cladding piece simultaneously, elastic rigidity is big, the control range is wide, and is very practical.

Drawings

Fig. 1 is a schematic view of the overall structure of a bridge expansion joint device according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of another angled portion of the structure of FIG. 1;

FIG. 3 is a bottom view of a portion of the structure of FIG. 1;

fig. 4 is an overall schematic view of an elastic telescopic structure in an embodiment of the present invention;

fig. 5 is a cross-sectional view of fig. 4.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 5, it is a preferred embodiment of the present invention. In this embodiment, this bridge expansion joint device includes roof beam steel construction 1, displacement case subassembly, crossbeam 13 and two sets of elastic expansion structure 3, and wherein roof beam steel construction 1 extends along the width direction of bridge, specifically includes two interval arrangement's boundary beam steel 11 and locates the well roof beam steel 12 between two boundary beam steel 11, and relative displacement between the bridge end beam can directly embody on the position between boundary beam steel 11 and well roof beam steel 12.

In the present embodiment, the displacement box assembly includes two displacement boxes 2 arranged oppositely, each displacement box 2 is supported below a corresponding side beam steel 11 and can move synchronously with the side beam steel 11 to approach or depart from the middle beam steel 12, the cross beam 13 extends along the length direction of the bridge, the beam steel structure 1 is arranged below and connected to the middle beam steel 12, and two ends of the cross beam 13 extend into the corresponding displacement boxes 2 and can move relatively to the displacement boxes 2 during the movement of each displacement box 2. That is, after the side sill steel 11 and the center sill steel 12 are relatively displaced, the end portions of the respective displacement boxes 2 corresponding to the cross member 13 are relatively displaced.

In this embodiment, the two sets of elastic telescopic structures 3 are respectively connected to two ends of the cross beam 13 and arranged on the moving path of the corresponding displacement box 2, and the two sets of elastic telescopic structures 3 on the single cross beam 13 are arranged in a staggered manner in the width direction of the bridge. The elastic telescopic structure 3 comprises an elastic supporting member 31 and an elastic wrapping member 32, wherein the elastic wrapping member 32 wraps the periphery of the elastic supporting member 31, and the elastic wrapping member 32 can elastically contract in the bridge length direction synchronously with the elastic supporting member 31 under the action of the corresponding displacement box 2. Specifically, the cross member 13 has a pressure plate 14 located inside the displacement box 2 and extending laterally, and each elastically stretchable structure 3 is provided between the pressure plate 14 and the inner wall of the displacement box 2. Furthermore, a reinforcing plate 15 is arranged on the side wall of each displacement box 2 adjacent to the centre sill 12, a pressure plate 14 is arranged on the end of the transverse beam 13 remote from the centre sill 12, and the elastically resilient structure 3 is arranged between the pressure plate 14 and the reinforcing plate 15.

In order to ensure the firm connection, the elastic telescopic structure 3 further includes an intermediate shaft 33, the intermediate shaft 33 and the cross beam 13 extend in the same direction, the elastic supporting member 31 is sleeved on the intermediate shaft 33, and the elastic cladding member 32 is wrapped on the peripheries of the intermediate shaft 33 and the elastic supporting member 31 and can elastically stretch and contract along the length direction of the intermediate shaft 33 synchronously with the elastic supporting member 31. The elastic covering member 32 in this embodiment is in the shape of a strip, and two side edges of the elastic covering member in the length direction are in arc transition. After the connection, the two ends of the intermediate shaft 33 are respectively exposed out of the two end surfaces of the elastic covering member 32, and the pressing plate 14 and the reinforcing plate 15 are provided with positioning holes 16 for the two ends of the intermediate shaft 33 to penetrate through.

Furthermore, directional terms, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like, used in the description and claims of the present invention are used to describe various example structural portions and elements of the present invention, but are used herein for convenience of description only and are to be determined based on example orientations shown in the accompanying drawings. Because the disclosed embodiments may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be construed as limiting, and for example, "upper" and "lower" are not necessarily limited to orientations opposite or consistent with the direction of gravity.

Claims

1. A bridge expansion joint installation comprising:

the bridge steel structure (1) extends along the width direction of a bridge and comprises two edge beam steels (11) which are arranged at intervals and a middle beam steel (12) arranged between the two edge beam steels (11);

the displacement box assembly comprises two displacement boxes (2) which are oppositely arranged, and each displacement box (2) is supported below the corresponding side beam steel (11) and can move close to or away from the middle beam steel (12) along with the side beam steel (11) synchronously;

the cross beam (13) extends along the length direction of the bridge, is arranged below the beam steel structure (1) and is connected to the middle beam steel (12), and two end parts of the cross beam (13) extend into the corresponding displacement boxes (2) and can move relative to the displacement boxes (2) in the movement of each displacement box (2);

it is characterized by also comprising:

two sets of elastic telescopic structures (3) are respectively connected to two ends of the cross beam (13) and are arranged on a moving path corresponding to the displacement box (2), and the elastic telescopic structures comprise elastic supporting parts (31) and elastic coating parts (32), wherein the elastic coating parts (32) are wrapped on the periphery of the elastic supporting parts (31), and the elastic coating parts (32) can elastically contract in the length direction of the bridge synchronously with the elastic supporting parts (31) under the action of the corresponding displacement box (2).

2. The bridge expansion joint installation of claim 1, wherein: the crossbeam (13) is provided with a pressure plate (14) which is positioned in the displacement box (2) and extends laterally, and each elastic telescopic structure (3) is arranged between the pressure plate (14) and the inner wall of the displacement box (2).

3. The bridge expansion joint installation of claim 2, wherein: each displacement box (2) is provided with a reinforcing plate (15) on the side wall adjacent to the center sill steel (12), the pressure plate (14) is arranged on the end part of the cross beam (13) far away from the center sill steel (12), and the elastic telescopic structure (3) is arranged between the pressure plate (14) and the reinforcing plate (15).

4. The bridge expansion joint installation of claim 3, wherein: elasticity extending structure (3) are still including jackshaft (33), jackshaft (33) and crossbeam (13) syntropy extend, elastic support piece (31) cover is established on jackshaft (33), elasticity cladding piece (32) parcel is in the periphery of jackshaft (33) and elastic support piece (31), and can stretch out and draw back along the length direction elasticity of jackshaft (33) with elastic support piece (31) in step.

5. The bridge expansion joint installation of claim 4, wherein: the elastic coating piece (32) is strip-shaped, and two side edges in the length direction of the elastic coating piece are in arc transition.

6. The bridge expansion joint installation of claim 5, wherein: the two ends of the intermediate shaft (33) are respectively exposed out of the two end faces of the elastic cladding piece (32), and the pressing plate (14) and the reinforcing plate (15) are provided with positioning holes (16) for the two ends of the intermediate shaft (33) to penetrate through.

7. The bridge expansion joint installation of claim 6, wherein: two groups of elastic telescopic structures (3) on the cross beam (13) are arranged in a staggered mode in the width direction of the bridge.